File Coverage

/usr/local/lib/perl5/site_perl/5.26.1/x86_64-linux/XS/libcatch.x/i/catch2/benchmark/detail/catch_run_for_at_least.hpp

Criterion	Covered	Total	%
statement	0	14	0.0
branch	0	28	0.0
condition			n/a
subroutine			n/a
pod			n/a
total	0	42	0.0

//              Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
//   (See accompanying file LICENSE_1_0.txt or copy at
//        https://www.boost.org/LICENSE_1_0.txt)

// SPDX-License-Identifier: BSL-1.0
// Adapted from donated nonius code.

#ifndef CATCH_RUN_FOR_AT_LEAST_HPP_INCLUDED
#define CATCH_RUN_FOR_AT_LEAST_HPP_INCLUDED

#include
#include
#include
#include
#include
#include
#include

#include

namespace Catch {
    namespace Benchmark {
        namespace Detail {
            template
            TimingOf measure_one(Fun&& fun, int iters, std::false_type) {
                return Detail::measure(fun, iters);
            }
            template
            TimingOf measure_one(Fun&& fun, int iters, std::true_type) {
                Detail::ChronometerModel meter;
                auto&& result = Detail::complete_invoke(fun, Chronometer(meter, iters));

                return { meter.elapsed(), CATCH_MOVE(result), iters };
            }

            template
            using run_for_at_least_argument_t = std::conditional_t::value, Chronometer, int>;


            [[noreturn]]
            void throw_optimized_away_error();

            template
            TimingOf>
                run_for_at_least(ClockDuration how_long,
                                 const int initial_iterations,
                                 Fun&& fun) {
                auto iters = initial_iterations;
                while (iters < (1 << 30)) {
                    auto&& Timing = measure_one(fun, iters, is_callable());

                    if (Timing.elapsed >= how_long) {
                        return { Timing.elapsed, CATCH_MOVE(Timing.result), iters };
                    }
                    iters *= 2;
                }
                throw_optimized_away_error();
            }
        } // namespace Detail
    } // namespace Benchmark
} // namespace Catch

#endif // CATCH_RUN_FOR_AT_LEAST_HPP_INCLUDED